Chimney-holder.



B. J. SGHWENDT.

CHIMNEY HOLDER.

APPLICATION IILEIJ .TAN.13, 1913,

1,086,407. Patented Feb. 10, 19m

coLUMBIA PLANOURAPH EOHWAHUNCITON, n c.

BERNARD J. SGHWENDT, 0F COLUMBUS, OHIO.

CHIMNEY-HOLDER.

Specification of Letters Patent.

Application filed January 13, 1913.

Patented Feb. 10, 1914..

$eria1 No. 741,656.

To all whom it may concern:

Be it known that I, BERNARD J. SoHwnND'r, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Chimney- Holders, of which the following is a specification.

My invention relates to the improvement of chimney holders and is particularly dirooted to improved means for supporting and holding the chimney in place.

More specifically, my invention takes the form of improved resilient means for supporting the lower end of a chimney in a manner to automatically compensate for distortions in the lamp structure due to expansion and contraction of the metallic parts.

Another object of my invention is to provide means for securely and positively locking the chimney in its operative position upon the lamp body. This 1 preferably accomplish by the provision of resilient clamping elements for normally positioning the chimney as are in present day use and a locking member operable to prevent outward movement of these clamping elements, although when the locking element is removed or released, ready movement of the clamping elements may be had. To more effectually accomplish this end, I provide the lower end of the chimney with an outwardly projecting annular shoulder for coacting with the clamping elements.

Other objects of my invention will be apparent from the following detailed description of my invention, to which reference may be had to the accompanying drawings, in which similar characters of reference designate corresponding parts, and in which:

Figure 1 is a side elevation, partially broken away, showing my invention as applied to the ordinary type of switch or signal lamp and showing the chimney locked in position, Fig. 2 is a top plan view of the structure shown in Fig. 1, with the chimney removed, Fig. 3 is an enlarged fragmentary view, partially in section, showing the chimney in its unlocked position, Fig. 1 is a top plan view of the preferred form of resilient cushioning means for the base of the chimney and showing the chimney in dotted lines, and, Fig. 5 is a fragmentary perspective of a portion of the lamp structure with my invention applied thereto.

In the drawings, I have shown a preferred type of switch signal lamp now in general use and comprising the body portion formed of an oil receptacle 1 and a burner element 2. The upper end of the burner element is closed by the cover 3 centrally through which upwardly extends the wick tube l regulable by means of the hand screw 5. A ring element 6 having its outer periphery threaded as at 7 and being notched at intervals as at 8 is supported from the body portion of the lamp by means of bent-over arms 9 forming brackets, also slotted as at 10 and forming an integral portion of the main circular supporting element 11 soldered to the closing wall 3 of the burner element. Extending upwardly from any desired portion of the burner element 2, are a plurality of resilient clamping elements 12 bent to any desired form and employed to normally properly locate and hold the glass chimney 13 in its operative position upon the lamp structure. This chimney 13 is provided with an outwardly extending annular shoulder 14 upon its lower end, which coacts with the inwardly bent portions 15 of the clamping elements 12. It will be noted that the chimney clamping elements are rigidly supported from the burner element and extend upwardly and operate within the slots 8 in the ring element and the slots 10 in the supporting brackets 9 by means of which they are permitted a limited lateral movement due to the annular shoulder 14 of the chimney when the same is inserted or removed from engagement with these clamping elements. To securely lock the chimney 13 in its operative position, I have provided an internally threaded cap element 16 of L-form in cross section to be screwed down upon the threaded portion 7 of the ring element 6. Fig. 1 of the drawings shows this cap element 16 as threaded on to the ring element 6 and having its laterally projecting edge in engagement with the lower legs of the bent port-ion 15 of the clamping members 12, thereby preventing their movement laterally and consequently preventing removal of the chimney 13. Fig. 3 shows this clamping structure as moved to a position permitting the ready removal of the chimney 13.

It will be obvious that the chimney is originally locked in its position upon the body portion of the lamp when the same is in a comparatively cool state and that subsequent heating of the same when the wick has been ignited, will cause a substantial expansion or both the glass chimney and the metal parts of the body portion. In order to prevent rupturing of the glass, I have provided a resilientbase support shown in the form of a Zigzag spring wire 17 mounted upon brackets 18 soldered to the annular supporting member 11. Thus it will be apparent that the chimney 13 has a resilient cushion for a base support and that suflicient resiliency may be had bet-ween the bearing points of the collar member 16 upon the clamping elements and the bearing points of the clamping elements on the chimney when the same are in locked position, to permit of any increase in size of the chimney due to expansion from heat.

It will be apparent that I have provided comparatively simple means for securely locking the chimney in its position upon the body portion of the lamp. This construction is particularly desirable where surety of operation is essential as accidental dislodgment and subsequent inoperativeness of the lamp is absolutely precluded. It will also be apparent that I have provided resilient cushioning means for coacting with the locking structure of the chimney to prevent its rupturing due to either normal or excessive heat, and to prevent breaking of the chimney due to shocks to which the lamp is subjected when used as a switch lamp.

\Vhat I claim, is:

In a fluid lamp, a body portion, a chimney, resilient clamping elements for said chimney carried by said body portion, a resilient base support for said chimney, a threaded hollow ring element carried by said body portion, an outwardly extending annular shoulder on the lower end of said chimney, and a cap adapted to screw down upon said ring element whereby said clamping elements are positively held in position on said shoulder to lock said chimney in its operative position.

In testimony whereof I aflix my signature in presence of two witnesses.

BERNARD J. SCHWVENDT. lVitnesses lVALrER E. L. Boon, A. L. PHELPS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

